package com.yu.yupicturebackend.controller;

import cn.hutool.core.bean.BeanUtil;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.yu.yupicturebackend.annotation.AuthCheck;
import com.yu.yupicturebackend.common.BaseResponse;
import com.yu.yupicturebackend.common.DeleteRequest;
import com.yu.yupicturebackend.common.ResultUtils;
import com.yu.yupicturebackend.constant.UserConstant;
import com.yu.yupicturebackend.exception.BusinessException;
import com.yu.yupicturebackend.exception.ErrorCode;
import com.yu.yupicturebackend.exception.ThrowUtils;
import com.yu.yupicturebackend.manager.auth.SpaceUserAuthManager;
import com.yu.yupicturebackend.model.dto.space.*;
import com.yu.yupicturebackend.model.entity.Space;
import com.yu.yupicturebackend.model.entity.User;
import com.yu.yupicturebackend.model.enums.SpaceLevelEnum;
import com.yu.yupicturebackend.model.vo.SpaceVO;
import com.yu.yupicturebackend.service.SpaceService;
import com.yu.yupicturebackend.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @Author: zy
 * @Date: 2025/2/19 23:41
 **/
@RestController
@RequestMapping("/space")
@Slf4j
public class SpaceController {
    @Resource
    private SpaceService spaceService;

    @Resource
    private UserService userService;
    @Autowired
    private SpaceUserAuthManager spaceUserAuthManager;


    /**
     * 新增空间
     * @param spaceAddRequest
     * @param request
     * @return
     */
    @PostMapping("/add")
    public BaseResponse<Long> addSpace(@RequestBody SpaceAddRequest spaceAddRequest,
                                       HttpServletRequest request){
        ThrowUtils.throwIf(spaceAddRequest==null,ErrorCode.PARAMS_ERROR);
        User loginUser = userService.getLoginUser(request);
        long newId = spaceService.addSpace(spaceAddRequest, loginUser);
        return ResultUtils.success(newId);
    }

    /**
     * 删除空间
     * @param deleteRequest
     * @param request
     * @return
     */
    @PostMapping("/delete")
    public BaseResponse<Boolean> deleteSpace(@RequestBody DeleteRequest deleteRequest,
                                               HttpServletRequest request){
        if(deleteRequest==null||deleteRequest.getId()<=0){
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User loginUser = userService.getLoginUser(request);
        Long id = deleteRequest.getId();
        Space oldSpace = spaceService.getById(id);
        //仅本人和管理员可删除
        spaceService.checkSpaceAuth(loginUser,oldSpace);
        //操作数据库
        boolean result = spaceService.removeById(id);
        ThrowUtils.throwIf(!result,ErrorCode.OPERATION_ERROR,"删除失败,数据库操作失败");
        return ResultUtils.success(true);
    }

    /**
     * 更新空间(仅管理员)
     * @param spaceUpdateRequest
     * @return
     */
    @PostMapping("/update")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Boolean> updateSpace(@RequestBody SpaceUpdateRequest spaceUpdateRequest,
                                               HttpServletRequest request){
        if(spaceUpdateRequest==null||spaceUpdateRequest.getId()<=0){
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        // 将实体类和 DTO 进行转换
        Space space = new Space();
        BeanUtil.copyProperties(spaceUpdateRequest,space);

        //自动填充数据
        spaceService.fillSpaceBySpaceLevel(space);
        // 数据校验
        spaceService.validSpace(space,false);
        // 判断是否存在
        Long id = spaceUpdateRequest.getId();
        Space oldSpace = spaceService.getById(id);
        ThrowUtils.throwIf(oldSpace==null,ErrorCode.NOT_FOUND_ERROR);

        //操作数据库
        boolean result = spaceService.updateById(space);
        ThrowUtils.throwIf(!result,ErrorCode.OPERATION_ERROR,"更新失败,数据库操作失败");
        return ResultUtils.success(true);
    }

    /**
     * 根据 id 获取空间（封装类）
     * @param id
     * @param request
     * @return
     */
    @GetMapping("/get/vo")
    public BaseResponse<SpaceVO> getSpaceById(long id,HttpServletRequest request){
        ThrowUtils.throwIf(id<=0,ErrorCode.PARAMS_ERROR);
        //查询数据库
        Space space = spaceService.getById(id);
        ThrowUtils.throwIf(space==null,ErrorCode.NOT_FOUND_ERROR);
        SpaceVO spaceVO = spaceService.getSpaceVO(space, request);
        User loginUser = userService.getLoginUser(request);
        List<String> permissionList = spaceUserAuthManager.getPermissionList(space, loginUser);
        spaceVO.setPermissionList(permissionList);
        //获取封装类
        return ResultUtils.success(spaceVO);
    }

    /**
     * 分页获取空间列表（仅管理员可用）
     * @param spaceQueryRequest
     * @return
     */
    @PostMapping("/list/page")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Page<Space>> listSpaceByPage(@RequestBody SpaceQueryRequest spaceQueryRequest){
        long current = spaceQueryRequest.getCurrent();
        long size = spaceQueryRequest.getPageSize();
        //查询数据库
        Page<Space> spacePage = spaceService.page(new Page<>(current,size),
                spaceService.getQueryWrapper(spaceQueryRequest));
        return ResultUtils.success(spacePage);
    }

    /**
     * 分页获取空间列表（封装类）
     * @param spaceQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/list/page/vo")
    public BaseResponse<Page<SpaceVO>> listSpaceVOByPage(@RequestBody SpaceQueryRequest spaceQueryRequest,
                                                             HttpServletRequest request){
        long current = spaceQueryRequest.getCurrent();
        long size = spaceQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size>20,ErrorCode.PARAMS_ERROR);

        // 查询数据库
        Page<Space> spacePage = spaceService.page(new Page<>(current,size),
                 spaceService.getQueryWrapper(spaceQueryRequest));

        //获取封装类
        return ResultUtils.success(spaceService.getSpaceVOPage(spacePage,request));
    }


    @PostMapping("/edit")
    public BaseResponse<Boolean> editSpace(@RequestBody SpaceEditRequest spaceEditRequest,HttpServletRequest request){
        if(spaceEditRequest==null||spaceEditRequest.getId()<=0){
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        // 在此处将实体类和 DTO 进行转换
        Space space = new Space();
        BeanUtil.copyProperties(spaceEditRequest,space);

        // 自动填充数据
        spaceService.fillSpaceBySpaceLevel(space);
        // 设置编辑时间
        space.setEditTime(new Date());
        // 数据校验
        spaceService.validSpace(space,false);
        User loginUser = userService.getLoginUser(request);

        // 判断是否存在
        Long id = spaceEditRequest.getId();
        Space oldSpace = spaceService.getById(id);
        ThrowUtils.throwIf(oldSpace==null,ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可编辑
        spaceService.checkSpaceAuth(loginUser,oldSpace);
        // 操作数据库
        boolean result = spaceService.updateById(space);
        ThrowUtils.throwIf(!result,ErrorCode.OPERATION_ERROR);
        return ResultUtils.success(true);
    }


    /**
     * 获取空间级别列表
     * @return
     */
    @GetMapping("/list/level")
    public BaseResponse<List<SpaceLevel>> listSpaceLevel(){
        List<SpaceLevel> spaceLevelList = Arrays.stream(SpaceLevelEnum.values())
                .map(spaceLevelEnum -> new SpaceLevel(
                        spaceLevelEnum.getValue(),
                        spaceLevelEnum.getText(),
                        spaceLevelEnum.getMaxCount(),
                        spaceLevelEnum.getMaxSize()))
                .collect(Collectors.toList());
        return ResultUtils.success(spaceLevelList);
    }


}
